Improvement in cultivators



A. DART.

Cultivator.

Patented June 1, I875.

JAYa/LA ATTDBNEYS.

WITNESSES THE GRAPHIC CG.PHOTDLITH.39&41 PARK PLACEJLY.

UE'rTEn STATES PATENT QFFICE.

ALBERT DART, OF ROCKVILLE, CONNECTICUT.

IMPROVEMENT IN CULTIVATORS.

Specification forming part of Letters Patent No. 163,921, dated June 1,1875; application filed April 17, 1875.

To all whom it may concern:

Be it known that I, ALBERT DART, of Rockville, Tolland county,Connecticut, have invented a new and useful Improvement in Cultivators,of which the following is a specification:

The invention will first be described in connection with the drawing,and then pointed out in the claim.

Figure l is a side elevation of my improved cultivator. Fig. 2 is a topor plan view, and Fig. 3 is a longitudinal vertical section.

Similar letters of reference indicate correspondin g parts.

A is the beam, to which the front share G and the handles C C areattached. B is a rear wheel for gaging the cut of the long mold-boards Iand I. The two front moldboards I I are supported from the beam by thestandard II, the front and lower end of which forms a cutter, K, inwhich the moldboards I terminate. L L are adjustable bars,- hinged tothe cross-piece m, which carry, by means of the stands M M, the two rearmoldboards J J. These bars L are spread apart by cam O, operated bymeans of the lever E on the shalt F, which latter passes through thebeam A, and has the cam attached to its lower end. These bars may beoperated by means of either singleor double cams, as may be desired. Thelever E extends back between the handles C C, so as to be at all timesunder the control of the attendant, who walks behind the guide andoperates the machine. D is a horizontal guide-bar, which passes throughthe beam and through the bars L L, and supports the bars and mold-boardsJ J as they are spread or expanded by the cams or forced inward by thepressure of the earth thereon. The wheel B is supported by the spring P,which is attached to the under side of the beam. Q is a yoke, to whichthe rear end of the spring P is attached, which yoke forms thearbor-bearings of the wheel. By pressure on the handles the mold-boardsI andJ are made to cut deep or shallow, as may be desired. Thearrangement of the mold-boards may be varied. The mold-boards J may beplaced outside of I, if desired. The draft-chain is attached to thestand It on the front end of the beam.

Having thus described my invention, I claim as new and desire to secureby Letters Patent The combination, with spring adjusting wheel, ofstationarywings I I and adjustable wings J J, as and for the purposespecified.

ALBERT DART. Witnesses:

DWIGHT MAROY, SAMUEL J. COREY.

